Incident Overview
Dolomite encountered an approval attack, leading to approximately $1.9 million in losses on the Ethereum network.
The attacker exploited the batchTransfer feature within the TradeDelegate contract, exploiting users' approved tokens and transferring them to the malicious contract. This method allowed the hacker to execute unauthorized transfers of approved tokens, resulting in significant financial losses.
Incident Report
Protocol Information
What the Attacker Needed to Succeed
Understanding the prerequisites for this type of attack helps auditors identify protocols that are most at risk and helps developers build better defenses.
What Auditors Should Check
If you're auditing a protocol with similar architecture to Dolomite, these are the critical security checks that could have prevented this incident (March 2024).
- Verify all logic paths related to Acces Control Exploit / Other are guarded by proper access controls and input validation - see the Access Control Attacks attack class for patterns
- Review privileged functions (owner, admin, governance) for potential abuse vectors - centralization risks should be documented and bounded with timelocks or multi-sigs
Master these auditing techniques with hands-on labs and real exploit scenarios in the Smart Contract Hacking course.
Free TrialRelated Attack Classes
The technique used in this hack maps to these vulnerability classes in our security curriculum:
Sources & References
Learn to Prevent the Next Dolomite
The Dolomite hack is one of many attacks that skilled auditors are trained to detect before deployment. Master real exploit patterns and defense techniques with hands-on Web3 security training.